Only one week ago, Donald Trump ran into trouble online when he tweeted a picture of himself that might’ve appeared patriotic, if it wasn’t for the Nazi soldiers also featured. Trump quickly took the picture down and said the picture was made by an intern, but if that intern is still in control of his account, he set off another gaffe late last night.

The tycoon plutocrat has been under fire since Saturday for his comments about John McCain‘s military record, and he took to Twitter...